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In the early days after the block editor landed in WordPress, block collection plugins exploded on the scene and were quick to rack up hundreds of thousands of users. Plugins like CoBlocks, Kadence Blocks, and Ultimate Addons for Gutenberg offer dozens of blocks in one package, focusing mostly on blocks not offered in core. WordPress.org’s Block Directory gave some incentive for creating single-block plugins, allowing users to search for and install them inside the block editor.
As block themes generally include less custom CSS than traditional themes, some plugin developers are experimenting with applying interesting styles to WordPress’ core blocks. Snow Monkey Editor, created by developer Takashi Kitajima, is one such plugin that doesn’t include any custom blocks. Instead, it extends the block editor to give unique styles to core blocks, giving them the appearance of custom blocks.
For example, Snow Monkey Editor will take a simple paragraph and transform it into various alert styles, post-it, speech, etc.